[spam report] More spammers

Dear admins,

please block the following users and remove their spam comments.
Some text may look valid, but it is just some general information about the topics and not helpful at all.

comment #4 in https://answers.launchpad.net/ubuntu/+source/calibre/+question/139714
comment #3 in https://answers.launchpad.net/ubuntu/+source/calibre/+question/223649
comment #3 in https://answers.launchpad.net/ubuntu/+source/calibre/+question/269698
comment #7 in https://answers.launchpad.net/ubuntu/+source/calibre/+question/688426
comments #7 to #9 on https://answers.launchpad.net/ubuntu/+source/calibre/+question/697266
comments #3 and #4 on https://answers.launchpad.net/ubuntu/+question/707792
comments #5 to #6 in https://answers.launchpad.net/ubuntu/+source/calibre/+question/707793
comment #13 on https://answers.launchpad.net/ubuntu/+source/gnome-nettool/+question/157263
comments #89 to #100 in https://answers.launchpad.net/ubuntu/+source/libcanberra/+question/195619
comment #2 in https://answers.launchpad.net/ubuntu/+question/707742
by
https://launchpad.net/~samjames12
https://launchpad.net/~sobbialex
https://launchpad.net/~tser
https://launchpad.net/~dani-23
https://launchpad.net/~zainlinkbuilding
https://launchpad.net/~coder93035
https://launchpad.net/~mugal23
https://launchpad.net/~treass

https://answers.launchpad.net/ubuntu/+source/calibre/+question/224023
https://answers.launchpad.net/ubuntu/+source/calibre/+question/223649
by
https://launchpad.net/~kelezibeth6498
https://launchpad.net/~princessheena2002

Thank you in advance.