MeFi Projects

Go to the New User page to read about accounts and follow the link to sign up and pay for the account. The current sign-up fee is US$5; it's a one-time fee and is the only cost associated with using the site. Once the PayPal payment is completed, your account will be active and you will be allowed to make comments on various MetaFilter threads. Please note that there is a waiting period to create a post to the front page of MetaFilter, however you can create an Ask MetaFilter post immediately.

We enforce a strict rule against posting your own work or work you've contributed to or are posting about in a promotional capacity, except on MetaFilter Projects or MetaFilter Music. Posting a link to a site you're connected to, or posting for promotional purposes (except on Projects or Music), will result in a ban with no refund.

If the signup fee is a financial or logistical hardship, you can drop the moderation team a line via the Contact Us form to ask about a complimentary signup.
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MeFi Projects is a space in the MetaFilter universe for members to toot their own horn and link to something that they have done - typically a completed project on the web. Projects has built in mechanisms so that people can give a post the thumbs up, either through clicking the vote link to give it a thumbs up, or clicking the "post this project to mefi" button on the project's permalink page. People can also send comments to the original poster of the project. More information can be found here.
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After you have posted a thread (a post in MetaFilter, a question in AskMetafilter, etc), you have to wait this long before posting a second thread in that same area of the site. There is no similar limit for comments.

MetaFilter - 12 hours
AskMetafilter - no limit
FanFare - no limit
Projects - one month
Music - 24 hours
Jobs - 24 hours between posting job Openings; you can only post one Availability total
Podcast - only admins post the podcast
IRL - no time limit, but you can have no more than 10 active IRL threads at a time
MetaTalk - one week

Note that these waiting periods are per-person, not per-account, so if you have two accounts you still can only post at these intervals. Using two accounts to get around the posting limits is against the rules and may result in your post being deleted and your second account closed.
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"Self-links" are links to your own site, or your own work, or a site that you host or contribute to substantially, or to a site of someone who is a client or business partner, or a site/event/cause you're promoting either professionally or as any kind of quid pro quo.

It is never okay to include a self-link in a front page post you make on Metafilter's community blog. People who self-link in the post text of front page posts on MetaFilter will have their posts removed and their account banned. It is never okay to use MetaFilter as a promotional tool. Transparency and honesty are important to the community and we rely on users to abide by the guidelines and participate honestly.

On Ask MetaFilter, questions that seem to be thinly veiled promotion or self-promotion will be removed. Questions that seem to be being asked with the intent to promote a poster's product or service, or client/friend's product or service, will be removed and the participating accounts banned. If you are unsure about a specific example, please contact us.

Linking to your own site in an Ask MetaFilter question is only okay if it has something specific to do with the question being asked and is necessary for people to provide an answer, for example "Can you look at my logo and tell me why everyone thinks it looks like a devil?" or "What else do I need to do to this website to make it ADA compliant?" (Even then, an extra-safe move is to link your site on your profile page and tell people they can see it by going through your profile.) Other self-links will be removed. AskMe posts that look like link-heavy MeFi posts or other promotional posts with a question tacked to the end of it are not okay.

In comments, in well-defined circumstances, self-links can be okay. Including a link to your own site in a Metafilter comment is okay provided that it has some relevance to the topic being discussed, and you clearly disclose your affiliation to the site or site-owner, and this type of comment is not your only form of site participation. Random off-topic insertions of self-links into other posts are discouraged and such links may be removed and result in a ban. Similarly, linking to your own content in AskMe answers is okay to do occasionally and with disclosure. People who seem to be self-linking continually, or seemingly with spammy intent may have their content removed and their account banned.

It is perfectly okay--even encouraged--to put a link to your own site in your profile, to post your own music to Music, post your web projects to Projects, and to post a job for your organization or post your own job availability in Jobs.

We've lifted the long-time prohibition on friend-linking, i.e. making MetaFilter posts about work that's not your own but which is by someone you have a friendship with or personal connection to. Any such posts still need to be fundamentally good MetaFilter posts in their own right, and to not be posted with promotional or "this will help my friend out" intent. In short, it needs to be something that you unambiguously would have chosen to post even if you didn't know that person at all. See this MetaTalk thread for more detail.
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With caution. Open fundraisers (Kickstarter, Indiegogo, etc) can be touchy posts, and you shouldn't post links to your own active fundraisers, ever. You can post the project once the fundraising period has ended. Petitions and related "like our cause on Facebook"-style campaigns rarely make good posts for MetaFilter. Linking to the work of someone who has a Patreon, but who also has content available outside of donor-locked Patreon posts, is usually okay.
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