Pocket is now integrated into the Firefox web browser, and you can login using your firefox/mozilla login, instead of having to create a separate account. This login method can even be used natively on their website, regardless what browser is being used.
This means that Pocket is (currently) a total lock-in.
This is very sad, unfortunate and creates a no go decision for any seasoned user.
Too many bookmarking and tagging companies have stopped or have gone bankrupt these last years (e.g. Kippt, Spingpad, Delicious (to some extent), etc...). So, if you are going to invest a lot of your personal time and energy in curating your Internet findings (i.e. your bookmarks and tags), it is essential that a total, fair and open export (including all tags) functionality is provided. Personally tested the export "feature" and the resulting .html file that Pocket generates currently included only the URLs themselves, i.e. no save dates nor any of your personally curated tags, nor any other useful meta-data.
These days of open and inter-operable web services, users are only attracted by valuable functionality, clean UX design and no lockins.