Pocket vs The Old Reader

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.
This is deplorable, because otherwise, Pocket is a very polished and well-functioning piece of multi-platform and multi-device software/app/web service, with a very easy and well-designed and implemented user interface...
Please fix this, Pocket !
These days of open and inter-operable web services, users are only attracted by valuable functionality, clean UX design and no lockins.

Although the pro version lets us search by tags, the search results unfortunately does not follow the time sequence of the saving of articles. Search results may show some old articles first, then a bunch of new articles, and then again old articles. It's so random and frustating.

I have been using Pocket pro for quite a long time primarily because it lets me have the permanent copy of a news (this feature is really useful in journalism). However, when I search tag wise for the old references, the absence of time-sequencing the search results really frustates me.

If the page title isn't correct/good for a link, there is no way for you to fix it.

A real bookmark tool has editable fields like title, url, folder, tags, notes. This saves webpages.

For example, imagine you accidentally created a tag "US" instead of "USA," and saved some articles under "US." The unfortunate part is even if you edit the tag and rename it "USA" , the previous tag name will always appear in the suggested tags: so when saving an article, if you type US in the tag box, you will see two suggestions "US" and "USA."

When importing bookmarks from Firefox, Pocket doesn't include the tags.

This application is proprietary, and thus cannot be modified, freely distributed, or trusted to be secure. Also, if the developer abandons it again, there will be no way for others to continue to update it.

Lacks an official native mobile app, but the mobile version of the site is quite usable and there are apps which support syncing with The Old Reader.
However, users have created many apps for a variety of platforms using The Old Reader API. You can check them out here.

While the sources can be added or removed, the feed cannot be filtered in any other way. Display options are limited as well, leaving the user with the standard view.