My two blogs simultaneously crossed a symbolic milestone today, with just 1000 entries each! It was not planned, I just saw the count on the MT menu and realized the coincidence. In December, my first blog in English will turn 5 years old. The French one turned 4 last month. Both gathered exactly 7600 comments as of today, which gives me the warm feeling that this blog discussion thing worked out quite well (though the French are really more vocal, up to their reputation :D).
Thanks for your attention :-)