What I found with OD was that of say 20 messages I might get that were from blokes I thought had some potential (probably about 20% of messages received at best), and reply to, 5 simply wouldn't reply to my reply, or disappear after another couple of messages.
Then of the remaining 15, another 5 would probably message backwards and forwards without suggesting a date, eventually I'd ask if they were interested in meeting and never get a reply.
Of the 10 that were left, all would suggest a date, half would vanish before one was arranged.
That might then be 5 possible dates. Of which 3 would basically indicate they were only after sex and either I'd cancel or - if I said that wasnt what I wanted - they'd just disappear. Leaving 2, 1 of those would probably cancel the day beforehand.
Best case, I'd end up with one date.
Date,would go well, he'd say he wanted a second date, we'd say goodnight etc, and I'd never hear from him again....
And as for sending messages myself, similar experience to everyone else, never got anywhere, either no reply at all OR nothing that resulted even in an offer of a date!