Match expiration after certain time

[rjheby]

Matches should expire after a certain amount of time so that people feel inclined to continue or end the conversation.

[WilliamDormer]

I agree for the most part, but in some cases people agree they want to go out, but they are both busy for a while, and in that case the match shouldn't be automatically dropped. Alternatively, the concurrent match limit also resolves the same problem.