Lately I've modified the computing method for the lists, thanks to the advise of Frank Rowe. This is my new computing method:

Number of Points:

Top 100, top 200, top 1000 lists: no. 1 = 100 points, no. 2 = 99 points, . . . , no. 99 = 2 points, no. 100 = 1 point

Top 50 lists: no. 1 = 100 points, no. 2 = 99 points, . . . , no. 49 = 52 points, no. 50 = 51 points,
albums that already earned points in other lists and were able to be in this list (because of their releasedate) earn their average points over the other lists with a maximum of 50 points.

Top 30 lists: no. 1 = 100 points, no. 2 = 99 points, . . . , no. 29 = 72 points, no. 30 = 71 points,
albums that already earned points in other lists and were able to be in this list (because of their releasedate) earn their average points over the other lists with a maximum of 70 points.

etc.

Year of release:

It isn't fair to make a list with Nirvana's Nevermind, Radiohead's OK Computer and albums from the sixties without taking the year of release in account. Albums from the sixties have got more opportunities to get points than recent albums, because the recent albums could never appear on All Time Top 100 Albums lists from the seventies, eighties and early nineties. That's why I've taken the year of release of the album in account. The total number of points an album has earned in the lists I've used has been divided by the maximum number of points an album could earn. This way albums from all years have an equal chance to get a high ranking. This method makes it also possible to use lists about a certain period like the 80's, 90's, etc.