4 opinions for 4 users and an image of mate
(1) Araniella cucurbitina - (2) Nigma sp. - (3) Nigma sp. (?walckenaeri) male and female - (4) Nigma sp.
. . 
2 opinions: (1) Zygiella sp. - (2) Zygiella sp
just 1 opinion: (1) Linyphiidae. . . 
in this moment there are 3 opinions but of the same user: (1) Dictynidae
(2) genere Dictyna - (3) Dictyna civica
Female and male of Steatoda nobilis ... (in right-bottom angle) the opistosoma of the spider confused with S.paykulliana at:
http://www.reptilis.org/steatoda%20paykuliana.htm ... it seems identical!