Plaxo is a great product, but considering I'm paying for the pro features I'm a little disappointed that the Mac version is quite limited. There is no plugin for iCal, and the contacts synchronisation seems to have some strange issues; most of the numbers and addresses I have on Plaxo itself have disappeared from my Apple Address Book. It's a good job I keep them backed up.

Let's hope Plaxo pull their thumbs out and sort out these problems soon.