I feel like I've been editing out the alternative tag all evening and it keeps coming back from the grave. This is a meta tag at its worst: it's meaningless, it doesn't provide any indication of what the question is about.
The alternatives tag is a meta tag. it should be banned and burniated.
Good questions, will provide examples of what as program that is similar to what they want. So most questions will deserve this tag.
(Community Wiki, Please feel free to edit this to provide arguments in favour of the banning of the tag.)
The http://alternativeto.net/tag is useful and interesting tag. Some people might want to follow it, because they are interested in alternatives in a general kinda way.
Alternatives are a different kinda question, the asker already has a solution, and so the issues they are facing are different.
These are the kinda people that browse: AlternativeTo, for fun. They are a large portion of our market.
(Community Wiki, Please feel free to edit this to provide arguments in favour of the keeping of the tag.)