I stopped using mycyclinglogs as it was out of order for a long time (days) in late July last year
Also when I stopped using it and I tried to export my data, the bike use information is not exportable. It will give you a spreadsheet of miles but not with a column for "which bike"
After this I flirted with Strava for a while. Strava takes gps tracklogs and uses them for "automatically" entering your rides. It was very convenient, I just had to press a few buttons on my android phone. However, either because of the inherent way that gps works and records on short rides or the phones lack of facilities or problems with the Strava software there were often annoying little discrepancies with the altitude or the distance.
I was a bikejournal user for several years but they were always beset with problems. Part of the bikejournal problems were probably due to me being here in the UK and the bikejournal server being over there in the US.
Before that I used another site that was unreliable, uk based, don't remember the name
I haven't logged any rides since PBP