In HTML, an attribute of the img tag that allows persnickety browsers to display text in place of the image, or to indicate the content of the image to the visually impaired and search engine spiders.
In the event that an image displayed on a web page displays text or other information, the Alt attribute should be set with descriptive text so that persnickety browsers, visually impaired people, and search engines can read the description. A lot of SEO spammers get themselves banned from search engines by keyword stuffing their Alt attributes.
Some accessibility nuts like to ruin a webmasters day by insisting that every blasted, non-informative image must have an "Alt tag". Some of us cave in to their nonsense by using NiDE, but the truth is, there is no such thing as an Alt tag. Alt is an attribute of the img tag.
Used as a contracted form of "F*cken Bugs" - or if you're conservative, as "Friggin' Bugs".
Many words can be appended with the discrete F-bomb with this simple appendage, not quite a prefix.
Even the pronunciation Fbugs.
Spammers who copy a former comment and use it as their own for a backlink - that shit fbugs.
A new tool being used against blackhat SEO companies, wherein users who are annoyed by spammers taking over their favourite blogging sites, such as Opendiary or LiveJournal, either:
a) create new blogs where spamdexed URL's are associated with negative terms like 'spamdexing' 'googleblasting' and so forth, or;
b) notebomb the spamdexing pages with pejorative terms, like those noted in a) above, or 'copyright violation' 'fake goods,' 'counterfeiting', 'fraud' and so forth.
The goal is to cause the spammers' pages to drop when search engines apply rules about spamdexing to downgrade rankings, and ultimately drive the spammers off of sites that prohibit spamdexing in the first place. It may also have the side effect of pissing off the SEO company's customers who find that they have suddenly been labelled 'spammers' by someone who sold them a bill of goods that didn't warn of the side effect.
Opendiary was being taken over by spammers until users started using antispamdexing methods.