I've depended on them (with Moneybookers backup) for about seven years now, with no problems once the original setup was all taken care of. I had slow but steady growth from just a few payers, though (translation agencies) - things would probably have gone differently had I had explosive growth of small amounts from a wide variety of payers.
Also: have a US bank and stick with it. If you leave the US, don't tell your bank! (I've had the same account since the 80's - it's gone through four banks now - and that might also be one factor in my looking stable.)
One of my agencies is a lady who did a round-the-world trip over two years, getting back a year ago. PayPal locked her payments - every time - while she was in Africa.
Also: have a US bank and stick with it. If you leave the US, don't tell your bank! (I've had the same account since the 80's - it's gone through four banks now - and that might also be one factor in my looking stable.)
One of my agencies is a lady who did a round-the-world trip over two years, getting back a year ago. PayPal locked her payments - every time - while she was in Africa.