Online services are often closed-source: once you start using them, it is very difficult to leave, because these companies do everything to keep you captive by preventing you, for example, from migrating your data elsewhere.
Bidh bun-tùs dùinte aig seirbheisean air loidhne gu tric: nuair a thòisicheas tu air an cleachdadh, bidh e glè dhoirbh am fàgail an uairsin on a nì na companaidhean ud nas urrainn dhaibh airson do chumail glacte annta, can nach leig iad leat an dàta agad imrich gu àiteigin eile.