Section 1: The exclusion of information independently developed by the receiving party from the definition of confidential information can be tricky. A receiving party that wants to rely on that exclusion must gamble that a judge or jury will believe that the receiving party really did independently develop the information. That's not always a given.
Section 1: The list of exclusions at the end is missing another common exclusion, namely "disclosed to a third party by the disclosing party without confidentiality obligations comparable to those of this Agreement."
Section 2: The receiving party's right to disclose to third parties is really broad, much broader than some people would be comfortable with.
Section 2: If the receiving party discloses confidential information to a third party, and the third party misuses it, then the receiving party is liable for that misuse, even if the receiving party was innocent.
Section 3: This clause contains a "best efforts" requirement, which is vague and therefore potentially dangerous. (Self-cite: See the notes linked at http://www.commondraft.org/#BestEffortsDefn.)
Section 5: Be sure you're comfortable with the time periods for protected disclosure (two years) and protection of the disclosed confidential information (seven years).
Section 6: The return-or-destruction requirement can be a pain; technically it requires purging of emails, backups, etc. Consider a carve-out such as that in http://www.commondraft.org/#ConfInfoReturnRqmt: "Specimens of Confidential Information need not be returned or destroyed to the extent that they are not reasonably capable of being readily located and segregated without undue burden or expense — for example, Confidential Information contained in email correspondence or electronic back-up systems."
Section 10: Any litigation must be in the specified location; that could make things expensive for the party not in that location.
Further general information and commentary (another self-cite): http://www.oncontracts.com/confidential-information/